export function floatAdd(arg1,arg2){
    //加
    var r1,r2,m;    
    try{r1=arg1.toString().split(".")[1].length}catch(e){r1=0}    
    try{r2=arg2.toString().split(".")[1].length}catch(e){r2=0}    
    m=Math.pow(100,Math.max(r1,r2));    
    return (arg1*m+arg2*m)/m;    
}
export function floatSub(arg1,arg2){
    //减  
    var r1,r2,m,n;    
    try{r1=arg1.toString().split(".")[1].length}catch(e){r1=0}    
    try{r2=arg2.toString().split(".")[1].length}catch(e){r2=0}    
    m=Math.pow(100,Math.max(r1,r2));
    n=(r1>=r2)?r1:r2;    
    return ((arg1*m-arg2*m)/m).toFixed(n);   
}
export function floatMul(arg1,arg2){
    //乘    
    var m=0,s1=arg1.toString(),s2=arg2.toString();     
    try{m+=s1.split(".")[1].length}catch(e){}     
    try{m+=s2.split(".")[1].length}catch(e){}     
    return Number(s1.replace(".",""))*Number(s2.replace(".",""))/Math.pow(10,m);     
}
export function floatExcept(arg1,arg2){
    //除
    var t1=0,t2=0,r1,r2;     
    try{t1=arg1.toString().split(".")[1].length}catch(e){}     
    try{t2=arg2.toString().split(".")[1].length}catch(e){}          
    r1=Number(arg1.toString().replace(".",""));  
    r2=Number(arg2.toString().replace(".",""));     
    return (r1/r2)*Math.pow(10,t2-t1);     
}

//获取地址栏参数
export function UrlSearch(tag){
    console.log(tag);
    var name,value; 
    var str=window.location.href; //取得整个地址栏
    var num=str.indexOf("?") 
    str=str.substr(num+1); //取得所有参数   stringvar.substr(start [, length ]
    var arr=str.split("&"); //各个参数放到数组里
    for(var i=0;i < arr.length;i++){ 
        num=arr[i].indexOf("="); 
        if(num>0){
            name=arr[i].substring(0,num);
            value=arr[i].substr(num+1);
            if(name === tag){
                return value;
            }
        }
    }
}

//分割数组
export function group(array, subGroupLength){
    let index = 0;
    let newArray = [];
    while(index < array.length){
      newArray.push(array.slice(index, index += subGroupLength));
    }
    return newArray;
}





    